package com.wj.chatroom.config;
import com.wj.chatroom.controller.WebSocketController;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
import org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor;

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
    @Autowired
    private WebSocketController webSocketController;
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry){
        //当前端请求路径是/WebSocketMessage时，就会调用WebSocketController类里的方法
        registry.addHandler(webSocketController,"/WebSocketMessage")
        //通过注册这个特定的HttpSession拦截器,就可以把用户给HttpSession中添加的Attribute键值对
        //往我们的WebSocketSession也添加一份
                .addInterceptors(new HttpSessionHandshakeInterceptor());
    }
}